Atmosphere Temperature Profiling and a Fusion Algorithm Based on Polarization HSRL and MWR

Jingjing LIU; Kailing LI; Zixiang XU; Jingzhe PANG; Jun WANG; Qing YAN; Dengxin HUA

doi:10.3788/gzxb20215007.0701001

Journals >Acta Photonica Sinica >Volume 50 >Issue 7 >Page 203 > Article

Acta Photonica Sinica
Vol. 50, Issue 7, 203 (2021)

Atmosphere Temperature Profiling and a Fusion Algorithm Based on Polarization HSRL and MWR

Jingjing LIU, Kailing LI, Zixiang XU, Jingzhe PANG, Jun WANG, Qing YAN, and Dengxin HUA^*

Author Affiliations

School of Mechanical and Precision Instrument Engineering， Xi'an University of Technology， Xi'an710048， China

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DOI: 10.3788/gzxb20215007.0701001 Cite this Article

Jingjing LIU, Kailing LI, Zixiang XU, Jingzhe PANG, Jun WANG, Qing YAN, Dengxin HUA. Atmosphere Temperature Profiling and a Fusion Algorithm Based on Polarization HSRL and MWR[J]. Acta Photonica Sinica, 2021, 50(7): 203 Copy Citation Text

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Fig. 1. Spectroscopic system diagram of polarized high spectral resolution lidar

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Fig. 2. Range-corrected signals under different channels from polarized HSRL

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Fig. 3. Atmosphere vertical temperature profiles from lidar， Microwave radiometer （MWR）， and sounding balloon between 0 and 10 km on 20：00， August 7， 2020

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Fig. 4. Comparison of atmosphere temperature profiles from lidar， MWR， and splicing data

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Fig. 5. The correlations of atmosphere temperature profiles from lidar， MWR， and splicing data

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	Parameters	Values
Emitter and receiver system	Laser wavelength	354.7 nm
	Pulsed energy	50 mJ
	Repetition frequency	10 Hz
	Spectral linewidth	90 MHz
	Diameter of telescope	250 mm
	Field angle	0.1 mrad
Spectroscopic system	Polarization beam splitter	T_p > 97%，T_s< 1% R_s > 99.5%，R_p < 5%
	Transmission exctinction ratio	1 000∶1
	Quater-wave plate	Precision of phase delay：<λ/100
Detector	PMTs	Hamamatsu R7056
	Quantum efficiency	0.23 @355 nm

Table 1. System parameters of polarized HSRL

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Item	Parameters
FPE filter	FPE₁	FPE₂	FPE₃
Frequency shift	0 GHz	+2.7 GHz	+1.25 GHz
FWHM	340 MHz	340 MHz	340 MHz
Mie rejection	/	4×10^-7	1 $\times$ 10^-5
Rayleigh transmittances	/	1.5%	4%
Temperature sensitivity	/	-0.011%/K	0.038%/K
Set temperature	309.5 K	313 K	311.2 K
FSR	10 GHz
T_peak	0.6

Table 2. Performance parameters of the Filter

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Parameters	Values
Type	MP3156A
Accuracy	0.1~1 K
Channels	22.234，23.034，23.834，26.234，30.000，51.248，52.280，53.848，54.940，56.660，57.288，58.800

Table 3. System parameters of microwave radiometer

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Effective detection altitude （x₀）	x₀<1 km	1≤x₀<4 km	4≤x₀<10 km	x₀=10 km
Values （A）	A=0	1~x₀km： $A = \frac{z - z_{1}}{x_{0} - z_{1}}$	1~4 km： $A = \frac{z - z_{1}}{z_{2} - z_{1}}$	A=1
		x₀~4 km：A=0	4~x₀km： $A = \frac{z - z_{1}}{x_{0} - z_{1}}$
		4~10 km：A=0	x₀~10 km：A=0

Table 4. Temperature splicing of microwave radiometer and lidar

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